The magnetic fluid exhibits variable birefringence and faraday effect under. This site is like a library, you could find million book here by using search box in the header. The photonics buyers guide is a comprehensive resource for verified providers of magneto optic modulators. These include laser mode control, optical mass memory, mode conversion in integrated optics, modulation and. Fejer department of applied physics, stanford university, stanford, california 94305 a technique for measuring the faraday effect and the magneto optic kerr effect has been developed.
It typically contains one or two pockels cells, and possibly additional optical elements such as polarizers. What links here related changes upload file special pages permanent link. A magneto optic modulator with a magnetic fluid film inserted into an optical fiber sagnac interferometer is proposed. Our advanced aircraft skin and rivet inspection solution for 20 years magneto optic imaging moi has been pivotal in increasing use and life extension of. The history of magnetooptical effects is first introduced. The mo properties arise from different effects of these interactions. Rp photonics encyclopedia electrooptic modulators, eom. Recent advances of wide band magnetooptical modulators in. Amplitude and phasefrequency characteristics of the magneto.
Pixel switching is electromagnetic, nonthermal, random access addressed by current pulses in crossed conductors deposited on the garnet. The research activities on the phenomenon of magnetooptic effects has recently promulgated due to its versatile use in magnetooptic recordings for high density magnetic data storage, magnetic field sensors and its applications in magnetoelectronics. Highresolution magnetooptic measurements with a sagnac interferometer invited a. The beam may be carried over free space, or propagated through an optical waveguide optical fibre.
Beyersdorf department of physics and astronomy, san jose. Magnetooptic definition of magnetooptic by merriamwebster. In this paper we present the fabrication procedure, simulation results and the preliminary experimental validation of a new type of an infiber modulator. Towards quantitative measurements of magnetooptic kerr eect. Proceedings volume 0038, electrooptics principles and applications. Pdf magnetooptic fiber sagnac modulator based on magnetic.
The modulator includes a fe micro particle inserted in a microscale hole drilled perpendicularly to the surface of. The physical origin of the magnetooptical effects is phenomenologically discussed. Pdf we propose an ultrafast magnetooptic mo modulator for the sfqto optical digital interface. The magnetooptic modulator rotates a polarization of a light incident to a magnetooptic device which causes faraday effect under such a. Towards quantitative measurements of magnetooptic kerr. Then the types of magneto optical effects are described, which include the varieties of the interactions of electromagnetic waves with magnetization or spins in solids. Collopy, yong xia, and jun ye jila, national institute of standards and technology and university of colorado, boulder, colorado 803090440. Pdf in this paper, we have proposed a magnetooptic mo surface plasmon polariton spp modulator based on variations of refractive index. New developments for a monolithically integrated magnetooptic modulator major professors.
Twodimensional magnetooptic spatial light modulator for. The research activities on the phenomenon of magneto optic effects has recently promulgated due to its versatile use in magneto optic recordings for high density magnetic data storage, magnetic field sensors and its applications in magneto electronics. Significant among these effects are the faraday effect also known as magnetic. Materials for magnetooptic modulators springerlink. Magnetooptical effect and applications mint center. Magnetooptical spatial light modulators moslms use magnetooptical faraday or kerr effect to rotate the polarization of light to toggle between.
Chapter iv other devices electro optic effect electro. Using hinds photoelastic modulator pem technology, the system provides unrivaled research grade sensitivity. A spatial light modulator for terahertz beams wai lam chan,1 houtong chen,2 antoinette j. What is electrooptic modulator an electrooptic modulator eom is a device which can be used for controlling the power, phase or polarization of a. Nsf graduate research fellowship honorable mention, 2012 2. Measurement of magnetooptic kerr effect using piezobirefringent modulator j. Then the types of magnetooptical effects are described, which include the varieties of the interactions of electromagnetic waves with magnetization or spins in solids. A 2d magnetooptic device with high speed nonvolatile random access capability is described in this paper.
We report the use of twodimensional, binary phaseonly diffraction gratings written on a programmable magneto optic spatial light modulator to interconnect optically an input laser beam to multiple output locations. Recent advances of wide band magnetooptical modulators. We demonstrate significantly improved magnetooptical trapping of molecules using a very slow cryogenic beam source and either rf modulated or dc magnetic fields. Magnetooptic modulator for high bandwidth cavity length. Wideband magnetooptic modulation in a bismuthsubstituted yttrium iron garnet waveguide. Magnetooptical phase modulation in integrated machzehnder. Drive requirements and structure are compatible with lsi technology. Generally, the magnetooptic kerr eect is the change of polarization and intensity of a light when it is reected by the surface of a magnetic sample. A linear polarizer lpvisb100 or lpnir100 placed after the source ensured the polarization of the input light was at a 45 angle to the optic axis of the eoamnrc1 electrooptic amplitude modulator. The simplest type of electrooptic modulator is a phase modulator containing only a pockels cell, where an electric field applied to the crystal via electrodes changes the phase delay of a laser beam sent through the crystal.
One example is then when there is no electricity, light can pass through, and when there is. Keywordsmagnetooptic modulation, faraday rotation effect, linbo3, yig, and ultra fast magnetic field. The physical origin of the magneto optical effects is phenomenologically discussed. The photonics buyers guide is a comprehensive resource for verified providers of magnetooptic modulators. Microwave magnetooptic bragg modulators with rectangular. This article presents the theoretical calculations of spatial distribution of the amplitude and phase characteristics of the stokes vector for a magneto optical modulator based on the magneto optical crystal in the framework of a bimorph plate of rectangular shape for the fundamental mode of magneto mechanical oscillations. The results of reflection from a magneto optic material are known as the magneto optic kerr effect not to be confused with the nonlinear kerr effect. Chapter iv other devices electro optic effect electro optic effect can be observed when light propagates through a crystal in the presence of an electric field.
We show that we can achieve programmable weighted interconnects between the source and two output locations as well as a fanout capability to as many as 128 separate output. Osa programmable optical interconnections with large fan. Pdf magnetooptical modulator for superconducting digital output. The modulator achieved a depth of modulation over 50 percent for an rms modula. All books are in clear copy here, and all files are secure so dont worry about it. Optical modulators using semiconductor nanostructures wikipedia. The physical principles of magneto optical recording by masud mansuripur cambridge university of press, 1995. A magnetooptic effect is any one of a number of phenomena in which an electromagnetic. Magnetooptic modulators suppliers photonics buyers guide. The magnetooptic spatial light modulator moslm, commercially available through semetex corporation, has successfully been integrated into a variety of optical signal processing, optical pattern recognition, and optical computing applications. This article presents the theoretical calculations of spatial distribution of the amplitude and phase characteristics of the stokes vector for a magnetooptical modulator based on the magnetooptical crystal in the framework of a bimorph plate of rectangular shape for the fundamental mode of magnetomechanical oscillations. Magnetooptic principles, materials and applications. Heterogeneous integration using wafer bonding can overcome many of these challenges, and provides a promising path towards integrating isolators with lasers on the. Mittleman1,a 1department of electrical and computer engineering, rice university, ms 366, houston.
Rgb magnetophotonic crystals for highcontrast magnetooptical. A second linear polarizer placed at the output of the modulator was aligned parallel to the first. A magnetooptic modulator with unit quantum effciency. Problem 76 introduces a different method for use of the magnetooptic spatial light modulator. Magnetooptic infiber micro modulator sciencedirect.
Depending on the parameter of a light beam which is manipulated, modulators may be categorized into amplitude modulators, phase modulators, polarization modulators etc. Pdf we propose an ultrafast magnetooptic mo modulator for the sfqtooptical digital interface. Jiming song bachelors of science, electrical engineering may 2011 honors, achievements, and service 1. Profiles and contact information for manufacturers and suppliers are provided by the companies and verified by our editors. Electro optic modulators scientists and engineers rely on our optical modulators for exceptional performance, quality, ease of use, broad selection, and excellent value. The results of reflection from a magnetooptic material are known as the magnetooptic kerr effect not to be confused with the nonlinear kerr effect. Radio frequency magnetooptical trapping of caf with high. The modulator includes a fe micro particle inserted in a microscale hole drilled perpendicularly to the surface of a single mode fiber and passing through the core of the fiber. Electrooptic modulator simple english wikipedia, the free.
We can use a lorentzdrude model of metal lm to describe moke 10. One example is then when there is no electricity, light can pass through, and when there is, it cannot, and is reflected. Gaas electro optic modulator the best modulator crystal produced under this program was a gaas crystal incorporated into the modulator shown in figures 1 and 2, which operated in the wave length range from 0. An electrooptic modulator is a device which can be used for controlling the power, phase or polarization of a laser beam with an electrical control signal. Jul 01, 2009 optic modulator types electrooptic modulator acoustooptic modulator magnetooptic modulator 3. These challenges largely stem from the incompatibility of magnetooptic material with the silicon or iiiv platforms commonly used today for photonic integration. The electric field applied to the crystal can alter or induce birefringence by changing the refractive index of the medium. Enhanced magnetic modulation of light polarization exploiting.
The magneto optic spatial light modulator moslm, commercially available through semetex corporation, has successfully been integrated into a variety of optical signal processing, optical pattern recognition, and optical computing applications. Highresolution magnetooptic measurements with a sagnac. The beauty of the photoelastic modulation technique is that, not only does this increase signaltonoise ratio for the detection of very small magnetooptical effects and can, in some instances, eliminate defects in polarizing. The magnetic fluid exhibits variable birefringence and faraday effect under external magnetic field that will lead to a phase difference and polarization state rotation in the sagnac interferometer. The optic and magnetooptic effects of the magnetic liquids can be theoretically studied using a selfconsistent effective medium formalism, providing the nanoparticles are much smaller than the light wavelength. Tamegai3 1department of physics, indian institute of technology, kanpur208016, india. Magnetooptical devices the optics encyclopedia castera. A vertically polarized light is incident on the magnetophotonic crystal structure in the format of. Finally, basic bulk electrooptic modulators are described in the fourth section, modulator devices including some design considerations and performance criteria. Towards heterogeneous integration of optical isolators and.
The optic and magneto optic effects of the magnetic liquids can be theoretically studied using a selfconsistent effective medium formalism, providing the nanoparticles are much smaller than the light wavelength. Because the iron garnets are cubic, exhibit small values of linear magnetic birefringence, and offer great flexibility in ion substitutions and some flexibility in optical absorption values, these materials provide clear advantages over any. Without magnetization, a reected light is polarized in the same plane as the incidence light. Problem 77 is an interesting and very practical problem.
Electro optic modulation systems offer the system designer very broad modulation bandwidth along with high optical efficiency. High sensitivity differential magnetooptical imaging with a. Pdf measurement of magnetooptical kerr effect using piezo. It is made of a material that has a socalled electrooptical effect. Magnetooptic characterization magnetooptic characteristics of materials are determined based on the interaction of light and matter in the presence of a magnetic field. A 2d magneto optic device with high speed nonvolatile random access capability is described in this paper.
Jul 12, 2019 all books are in clear copy here, and all files are secure so dont worry about it. Pdf magnetooptic surface plasmon polariton modulator based on. In this formalism, the optical properties of the composite medium are described by an effective dielectric tensor that depends on. An electro optic modulator is a device which can be used for controlling the power, phase or polarization of a laser beam with an electrical control signal. Improved magnetooptic trapping in a vapor cell sites at penn state. Current status of the magnetooptic spatial light modulator. If the modulator is not driven at or close to its resonant frequency, most of the rf drive power will be reflected, which could cause damage to the driver. This means that the material changes its optical properties when there is an electric field. Highresolution magneto optic measurements with a sagnac interferometer invited a. When light is transmitted through a layer of magneto optic material, the result is called the faraday effect. Gaas electrooptic modulator the best modulator crystal produced under this program was a gaas crystal incorporated into the modulator shown in figures 1 and 2, which operated in the wave length range from 0. As a result, the intensity of the output light is modulated under the external.
Magnetooptic fiber sagnac modulator based on magnetic fluids. Optical modulators using semiconductor nanostructures. Jul 08, 2016 our advanced aircraft skin and rivet inspection solution for 20 years magneto optic imaging moi has been pivotal in increasing use and life extension of aircraft structures. To prevent damaging the electrooptic crystal, do not exceed the modulators maximum rf drive power see table 1 on page 16 and table 2 on page 17 for maximum rf power. We report the use of twodimensional, binary phaseonly diffraction gratings written on a programmable magnetooptic spatial light modulator to interconnect optically an input laser beam to multiple output locations. Magnetooptic modulator and optical communication system using. Magnetooptic definition is of, relating to, or utilizing the influence of a magnetic field upon light. No dedicated beamforming optics are required, and the interface requirements placed on the host system are minimal. Chapter iv other devices electro optic effect electro optic. Magneto optic definition is of, relating to, or utilizing the influence of a magnetic field upon light. What is electrooptic modulator an electrooptic modulator eom is a device which can be used for controlling the power, phase or polarization of a laser beam with an electrical control signal. The large amplification of the magnetooptical response of the nanocavity is the result of the large magnetooptically induced change in light polarization produced by the strongly enhanced.
Version download1667 stock0 total files1 file size461. What links here related changes upload file special pages permanent link page. Magneto optic current transformer technology moct doi. Beyersdorf department of physics and astronomy, san jose state university, san jose, california 95192 m. A magnetooptic modulator with a magnetic fluid film inserted into an optical fiber sagnac interferometer is proposed. A wideband yig modulator has recently been developed which represents a great improvement over other magneto optic modulators. Mar 30, 2020 the large amplification of the magneto optical response of the nanocavity is the result of the large magneto optically induced change in light polarization produced by the strongly enhanced. The discussion presented in this chapter applies to any electrooptic material, any direction of the applied voltage, and any direction of the wave vector. Fejer department of applied physics, stanford university, stanford, california 94305 a technique for measuring the faraday effect and the magnetooptic kerr effect has been developed. Measurement of magnetooptical kerr effect using piezobirefringent modulator article pdf available in japanese journal of applied physics 2012. New developments for a monolithically integrated magneto optic modulator major professors. Electrooptic modulators scientists and engineers rely on our optical modulators for exceptional performance, quality, ease of use, broad selection, and excellent value. Spatial light modulator slm is an optical device, which uses an array of pixels to control the. Magnetooptic modulator for high bandwidth cavity length stabilization.
When light is transmitted through a layer of magnetooptic material, the result is called the faraday effect. Our mo modulator is based on the faraday effect and. An optical modulator is an optical device which is used to modulate a beam of light with a. Optic modulator types electrooptic modulator acoustooptic modulator magnetooptic modulator 3. An optical modulator is a device which is used to modulate a beam of light. The history of magneto optical effects is first introduced.
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